Strong anisotropic spin-orbit interaction induced in graphene by monolayer WS₂
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
We demonstrate strong anisotropic spin-orbit interaction (SOI) in graphene induced by monolayer WS₂. Direct comparison between graphene-monolayer WS2 and graphene-bulk WS₂ systems in magnetotransport measurements reveals that monolayer transition metal dichalcogenide can induce much stronger SOI than bulk. Detailed theoretical analysis of the weak antilocalization curves gives an estimated spin-orbit energy (Eso) higher than 10 meV. The symmetry of the induced SOI is also discussed, and the dominant z → −z symmetric SOI can only explain the experimental results. Spin relaxation by the Elliot-Yafet mechanism and anomalous resistance increase with temperature close to the Dirac point indicates Kane-Mele SOI induced in graphene.
Date Issued
2018-03-09
Date Acceptance
2018-02-02
Citation
Physical Review Letters, 2018, 120 (10)
ISSN
0031-9007
Publisher
American Physical Society
Journal / Book Title
Physical Review Letters
Volume
120
Issue
10
Copyright Statement
© 2018 American Physical Society
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
The Royal Society
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000427020400013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/L003481/1
EP/M022250/1
UF160539
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
LOCALIZATION
Publication Status
Published
Article Number
106802
Date Publish Online
2018-03-09